Mitutoyo Inside Micrometer B 139-181

Description

139-181 Mitutoyo Tubular Inside Micrometer – Inch

The Mitutoyo 139-181 Tubular Inside Micrometer – Inch has the following specifications:

Range: 4″ – 68″
Travel of micrometer head: 1″
Accuracy: +/-{.00012+m+(.00004R/2)}* R=Maximum measuring length (inch) n=number of rods Fraction rounded up
Graduation: 0.01mm or .001″
Extension pipes: 1″, 2″, 4″, 8″, 16″ (3 pcs.)
Features:

Wide range of ID measurements by combining extension pipes and anvils with the micrometer head.
Supplied in fitted wooden case, except 500 mm / 20″ which comes in plastic case.